package com.sky.mapper;

import com.sky.dto.ShoppingCartDTO;
import com.sky.entity.ShoppingCart;
import org.apache.ibatis.annotations.Delete;
import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.Mapper;

import java.util.List;

@Mapper
public interface ShoppingCartMapper {

    /**
     * 动态查询购物车
     * @param shoppingCart
     * @return
     */
    List<ShoppingCart> list(ShoppingCart shoppingCart );

    //根据用户id设置对应已存在购物车某商品的数量
    void updateNumById(ShoppingCart cart);

    //插入购物车数据
    @Insert("insert into shopping_cart (name, user_id, dish_id, setmeal_id, dish_flavor, number, amount, image, create_time) " +
            " values (#{name},#{userId},#{dishId},#{setmealId},#{dishFlavor},#{number},#{amount},#{image},#{createTime})")
    void insert(ShoppingCart shoppingCart);

    /**
     * 清空userid对应的购物车
     * @param id
     */
    @Delete("delete from shopping_cart where user_id = #{id}")
    void cleanByUserId(Long id);

    /**
     * 删除购物车中的一个商品
     * @param shoppingCart
     */
    void DeleteById(ShoppingCart shoppingCart);

    void insertBatch(List<ShoppingCart> shoppingCartList);
}
